There was another article recently that looked at gender issues and concluded that the differences weren't so much women being better or worse off, but the men being more extreme and greater risk takers. So men see more of both the highs and the lows. It isn't an inherent difference in ability at all, but there may be inherent behavioral differences partly accounted for by hormones and other genetic factors.

It's a very limited comparison, but look at the behavior differences between male cats that have been "fixed" and those that haven't.

Differences in testosterone and oxytocin levels vary and can have a large influence on behavior.